Yeah, I believe it's just... nothing.
Humans have the constant need for seeking an answer for everything, even what is impossible for them to know. We'll never tell what happens after we die, before we die. And when you do, you can't get back and tell the others. And that's exactly because nothing else happens, our body becomes a pile of decomposable tissues and organs as we've ever been. We just haven't been decomposed before because while alive our body defenses are active. Dead we are just that. Our brain simply shuts down and there is nothing after that.
That's the logical way of thinking, but apart from that we can think whatever we want about an after life, such as going to heaven or hell.
If I want to believe that I'll go live in a magical land of cookies close to a strawberry river with chocolate trees, it's as valid as anything else we might come up with. We believe in what we want to believe, and it's impossible to discover the actual truth...